linux-cve-announce - CVE-2024-42156: s390/pkey: Wipe copies of clear-key structures on failure

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Message-ID: <2024073035-CVE-2024-42156-1f82@gregkh>
Date: Tue, 30 Jul 2024 09:48:14 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-42156: s390/pkey: Wipe copies of clear-key structures on failure

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

s390/pkey: Wipe copies of clear-key structures on failure

Wipe all sensitive data from stack for all IOCTLs, which convert a
clear-key into a protected- or secure-key.

The Linux kernel CVE team has assigned CVE-2024-42156 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.9.9 with commit 7f6243edd901
	Fixed in 6.10 with commit d65d76a44ffe

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-42156
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/s390/crypto/pkey_api.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/7f6243edd901b75aaece326c90a1cc0dcb60cc3d
	https://git.kernel.org/stable/c/d65d76a44ffe74c73298ada25b0f578680576073